h a l f b a k e r y
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Now, don't get me wrong, I enjoy the sound of squeaky
rubber on glass, and the hypnotic, occasionally in-the-
nature of traditional windscreen wipers as much as the
next man. However, could the problem be solved in a
functionally superior but vastly over-complex manner?
"Yes" is the answer
to that. So, here we go.
Take a weather RADAR... specifically a Ka-band system
detecting small droplet phenomena. Mount it on your car
as inconspicuous a manner possible. Right, now you can
track the rain drops that are in front of your car... some
clever software trickery will take GPS data on the car's
position and speed and will be able to identify rain drops
which will intercept the car (rain drops which need to go,
The second component of the system, will be a pair of
lasers. I've chosen CO2 lasers because they're cheap for
their power, and can be isotopically doped to modify
IR frequency down to about 1090 or so, this is useful,
because that's where water absorbs. There's going to be
some pretty fancy optics required to track and laser tens
of thousands of raindrops. So I recommend the fitting of
pretty fancy optics.
Now, in some parts of the world, 300 litres of rain have
fallen on 1 square metre in an hour, I appreciate that
boiling off 300 litres, quickly, with lasers may require
equipment which could negatively impact the fuel
of a family hatchback, but this is where the clever bit
comes in... Using the lasers as a pair, they will shoot the
rain drop from two directions, the volume where the
beams cross will be subject to heating at a much greater
rate... now, I'm betting that you can create a small
of steam very rapidly in this manner.... blowing the
raindrop to smithereens. With VERY fancy optics you
use this system to apply asymmetric force to the
raindrop.... a blast on the left side would send the drop
the right, and so on.
The combination of fancy optics and clever software
be able to "steer" the raindrops around your car so that
you're driving through a dry tunnel, like some form of
automotive Moses. As a side benefit, you will effectively
double the rainfall either side of you, making people
without the system suffer accordingly.
The personal version. [Wrongfellow, Mar 04 2013]
Smart Headlights Let Drivers See Through Rain and Snow
You could use a very similar controller unit to these. [Wrongfellow, Mar 04 2013]
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||oooh, that umbrella idea is really very similar...
||Visions of a phalanx of Audi R8s, each equipped with Laser
Windscreen Wipers, speeding down the Top Gear track in
tight formation, vertical sheets of water channeled
between them like rippling, trembling window panes.
||//There's going to be some pretty fancy optics
required ... So I recommend the fitting of pretty
||How can one not bun such wisdom? [+]
||Incidentally, would a sufficiently powerful K-band
radar not be sufficient in an of itself to zap the
||The problem with using powerful ka-band RADAR, is
that if might interfere with the efforts of the good
people who implement their daily efforts in the
general direction of law enforcement. I dread to
think what many kW of Ka-Band RADAR might do to a
speed gun, the person holding it or nearby flora and
||playing fast-and-loose with industrial-strength
invisible lasers however, is clearly OK.
||Also, going for an all-RADAR system would eliminate
lasers. Eliminating lasers is never good. Think before
you suggest such things :-).
||//Think before you suggest such things// If I had a
pound for every time I've been told that. Or even an
||alternatively this system could be adapted for
facilitating the disintegration of things headed
toward expensive jet engines...
||All that engineering and not one paragraph break.